Should Instagram allow this? TRIGGER WARNING

Back in highschool I was struggling with an eating disorder. 

I was trying to find someone I could relate to online and chose Instagram to look. I found hashtags like "pro Ana" and "proanorexia" and at some point Instagram banned those hashtags. Pictures of self harm or just things that promote self harm aren't allowed either. 

There were girls who made accounts for the sole reason to ENCOURAGE anorexia, bulimia or EDNOS. 

I had to take into consideration that these people were sick, like myself. So I couldn't be mad about it even though I thought it was crazy. I don't really want anyone else to go through what I went through and they encouraged each-other on the daily to stay sick. People would get on and attack them for it and the proanorexia accounts said that it is a way of self expression. That they should have the freedom to use socail media as a way to vent  or a way to cope. It, in a sense "helped" them to be able to express themseleves freely with other people who related. 

All of those accounts ended up being deleted and if more are created they end up reported and consequently deleted. The poll question: do you think they should have been allowed to do this? Not just for eating disorders but all forms of self harm.